X7R Dielectric
General Specifications
X7R formulations are called temperature stable ceramics and fall into EIA
Class II materials. X7R is the most popular of these intermediate dielectric
constant materials. Its temperature variation of capacitance is within 15%
from -55C to +125C. This capacitance change is non-linear.
Capacitance for X7R varies under the influence of electrical operating con-
ditions such as voltage and frequency.
X7R dielectric chip usage covers the broad spectrum of industrial
applications where known changes in capacitance due to applied voltages
are acceptable.
PART NUMBER (see page 2 for complete part number explanation)
0805 5 C 103 M A T 2 A
Size Voltage Dielectric Capacitance Capacitance Failure Terminations Packaging Special
( x ) 4V = 4 X7R = C Code (In pF) Tolerance Rate 2 = 7" Reel Code
T = Plated Ni
6.3V = 6 J = 5%* A = Not 4 = 13" Reel A = Std. Product
2 Sig. Digits + Num-
and Sn
10V = Z K = 10% Applicable
ber of Zeros
Z= FLEXITERM **
16V = Y M = 20%
25V = 3
Contact
50V = 5 *1F only,
Factory For
100V = 1 contact factory for addi-
*Optional termination
Multiples
200V = 2 tional values
500V = 7
**See FLEXITERM
X7R section
NOTE: Contact factory for availability of Termination and Tolerance Options for Specific Part Numbers.
Contact factory for non-specified capacitance values.
110317
19X7R Dielectric
Specifications and Test Methods
Parameter/Test X7R Specification Limits Measuring Conditions
Operating Temperature Range -55C to +125C Temperature Cycle Chamber
Capacitance Within specified tolerance
10% for 50V DC rating Freq.: 1.0 kHz 10%
12.5% for 25V DC rating Voltage: 1.0Vrms .2V
Dissipation Factor
12.5% for 25V and 16V DC rating For Cap > 10F, 05Vrm @ 120Hz
12.5% for 10V DC rating
100,000M or 1000M - F, Charge device with rated voltage for
Insulation Resistance
whichever is less 120 5 secs @ room temp/humidity
Charge device with 250% of rated voltage for
Dielectric Strength No breakdown or visual defects 1-5 seconds, w/charge and discharge current
limited to 50 mA (max)
Note: Charge device with 150% of rated
voltage for 500V devices.
Appearance No defects Deflection: 2mm
Capacitance Test Time: 30 seconds
12%
Resistance to Variation
Flexure Dissipation
Meets Initial Values (As Above)
Stresses Factor
Insulation
Initial Value x 0.3
Resistance
95% of each terminal should be covered Dip device in eutectic solder at 230 5C
Solderability
with fresh solder for 5.0 0.5 seconds
Appearance No defects, <25% leaching of either end terminal
Capacitance
7.5%
Variation
Dip device in eutectic solder at 260C for 60
Dissipation
Resistance to seconds. Store at room temperature for 24 2
Meets Initial Values (As Above)
Factor
hours before measuring electrical properties.
Solder Heat
Insulation
Meets Initial Values (As Above)
Resistance
Dielectric
Meets Initial Values (As Above)
Strength
Appearance No visual defects Step 1: -55C 2 30 3 minutes
Capacitance
7.5% Step 2: Room Temp 3 minutes
Variation
Dissipation
Thermal
Meets Initial Values (As Above) Step 3: +125C 2 30 3 minutes
Factor
Shock
Insulation
Meets Initial Values (As Above) Step 4: Room Temp 3 minutes
Resistance
Dielectric Repeat for 5 cycles and measure after
Meets Initial Values (As Above)
Strength 24 2 hours at room temperature
Appearance No visual defects
Capacitance Charge device with 1.5 rated voltage ( 10V) in
12.5%
Variation test chamber set at 125C 2C
for 1000 hours (+48, -0)
Dissipation
Initial Value x 2.0 (See Above)
Load Life Factor
Insulation Remove from test chamber and stabilize
Initial Value x 0.3 (See Above)
Resistance at room temperature for 24 2 hours
Dielectric before measuring.
Meets Initial Values (As Above)
Strength
Appearance No visual defects
Store in a test chamber set at 85C 2C/
Capacitance
12.5%
85% 5% relative humidity for 1000 hours
Variation
(+48, -0) with rated voltage applied.
Load Dissipation
Initial Value x 2.0 (See Above)
Humidity Factor
Remove from chamber and stabilize at
Insulation
Initial Value x 0.3 (See Above) room temperature and humidity for
Resistance
24 2 hours before measuring.
Dielectric
Meets Initial Values (As Above)
Strength
110317
20